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Honors Intro Psych
Dr. Dempsey Exam II
138
Psychology
Undergraduate 1
03/11/2009

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Term
sensation
Definition
the ability for sense organs to respond to and translate a particular stimuli
Term
perception
Definition
understanding the signals and sending them to the brain
Term
absolute threshold
Definition
the lowest intensity at which a stimulus can be detected 50% of the time
Term
decision criterion
Definition
how certain someone is that they detected a certain stimulus
Term
Signal Detection Theory
Definition
concerned with the factors that influence sensory judgments such as fatigue, expectation, significance of the stimuli
Term
subliminal stimulus
Definition
a stimulus that is so weak that it may not be perceived consciously
Term
The Difference Threshold
Definition
smallest difference between two stimuli that people perceive 50% of the time- a "Just Noticeable Difference"
Term
Weber's Law
Definition
the difference threshold is directly proportional to the magnitude of the stimulus to which the comparison is being made
Term
Transduction
Definition
the process by which stimulus is converted into nerve impulses
Term
vision
Definition
stimulus is electromagnetic energy (light waves) sensitive to wavelength from about 400-700 nanometers
Term
Rods
Definition
primarily black and white brightness receptors that function best in dim light
Term
cones
Definition
pick up color, function best in bright light
Term
Fovea
Definition
a small area of the retina that contains no rods but many densely packed cones. The farther a cone is from the center of the retina, the less the concentration.
Term
Young-Helmholtz Trichromatic Theory
Definition
BGR, hard to see yellow
Term
Opponent Process Theory
Definition
3 types of cones respond to 2 different wavelengths
RG, BY, BW-BRAIN
Term
Dual Processing Theory
Definition
combines previous two theories to account for color transduction theory.

Trichomatic cones are most sensitive to RBG and those senses are sent to the brain (Opponent Theory)
Term
Color-Deficient Vision
Definition
TRICHOMATIC have normal vision of all three, DICHROMAT is color blind to 1 of 3, MONOCHROMATIC are completely color blind and see only BW.
Term
sound localization
Definition
nervous system uses time and intensity differences of sounds arriving at two ears to locate sounds. The sound will be perceived first and loudest by the ear that its closest to
Term
oflaction
Definition
sense of smell
Term
olfactory bults
Definition
a forebrain structure immediately above the nasal cavity, codes various odors. (Stronger in animals than humans)
Term
pheromones
Definition
chemical signals found in natural body cents. Can have subtle influence on behavior
Term
Consciousness
Definition
moment-to-moment awareness of ourselves/environment
Term
self-report measures
Definition
a personal opinion based method of measuring states of conciousness
Term
behavioral measures
Definition
performance based method of measuring states of consciousness
Term
physiological measures
Definition
measuring consciousness by bodily processes and mental states
Term
Freudian Viewpoint
Definition
conscious mind contains thoughts and perceptions currently aware, preconscious outside current awareness but easily recalled, unconscious cannot be brought into conscious awareness
Term
Cognitive Viewpoint
Definition
controlled=conscious, current, deliberate

automatic=unconcious, without effort, fast routine

divided attention= multi-tasking
Term
Visual Agnosia
Definition
inability to visually recognize objects
Term
propoagnosia
Definition
inability to recognize faces
Term
Blindsight
Definition
reported blindness in a part of visual field, still respond to stimuli
Term
priming
Definition
exposure to stimulus influences how you subsequently respond to that same stimulus or another
Term
emotional unconsciousness
Definition
emphasize emotional and motivational processes operate unconsciously and influence behavior
Term
consciousness as a "global workspace"
Definition
represents a unified activity of multiple modules in different areas of the brain (frontal lobe is most responsible)
Term
learning
Definition
a process by which experience produces a relatively enduring change in an organism's behavior
Term
4 Basic Learning Processes
Definition
habitual, classical conditioning, operant, observational
Term
Behaviorism
Definition
assumes that there are laws of learning that apply to all organisms
Term
species adaption
Definition
environment shapes a specie's biology
Term
natural selection
Definition
characteristics that enhance specie's ability to survive and reproduce, over time become a part of the specie's nature
Term
personal adaption
Definition
learning that focuses on how an organism's behavior changes in response to environmental stimuli encountered during its lifetime
Term
habituation
Definition
a decrease in the strength of a response to a repeated stimulus
Term
Classical Conditioning
Definition
learn to associate 2 stimuli so that one creates a response originally seen from reaction of another (bell/food) ELICIT BEHAVIOR
Term
acquisition
Definition
period during which a response is being learned
Term
neutral stimulus
Definition
does not naturally create a response
Term
unconditioned stimulus (UCS)
Definition
*always creates a response

elicits a reflexive or innate response without prior learning
Term
unconditioned response (UCR)
Definition
reflexive or innate response that occurs without prior learning
Term
conditioned stimulus (CS)
Definition
*stimulus reaction under experiment


association with the UCS creates a conditioned response similar to the UCR (baby is shocked when it sees a rabbit, baby will scream when it sees a rabbit thinking that it will be shocked)
Term
conditioned response (CR)
Definition
a response elicited by a conditioned stimulus (CS)
Term
forward short-delay pairing
Definition
CS appears first and is still present when the UCS disappears
Term
forward trace-pairing
Definition
CS appears and then disappears (repeated) and then the UCS is presented 2-3 seconds later
Term
simultaneous pairing
Definition
CS and UCS are presented at the same time
Term
backward pairing
Definition
CS occurs before the UCS
Term
extinction
Definition
a process in which the CS is presented repeatedly in the absence of the UCS, causing the CR to weaken and eventually disappear
Term
spontaneous recover
Definition
the reappearance of previously extinct CR after a rest period and without new learning trials
Term
stimulus generation
Definition
stimuli similar to the initial CS elicit CR (salivation may occur when hearing a piano, a similar tone to a bell)
Term
discrimination
Definition
a CR occurs in the presence of one stimulus but not others (salivation may not occur with a whistle)
Term
higher-order conditioning
Definition
occurs when a neutral stimulus becomes a CS after being paired with an already established CS (ie- a snap may cause a blink after being associated with a whistle or blow of air)
Term
Thorndike's Law of Effect
Definition
a response followed by a satisfying consequence will be more likely to occur as a response followed by a negative consequence will be less likely to occur again
Term
Instrumental Learning
Definition
process by which animals utilize TRIAL AND ERROR to achieve desired out come
Term
Operant Conditioning
Definition
a type of learning in which behavior is influenced by the consequences that follow it (Law of Effect) EMITTED BEHAVIOR
Term
Skinner Box
Definition
a special chamber used to study operant conditioning experimentally
Term
reinforcement+
Definition
a response is strengthened by an outcome that follows it
Term
punishment-
Definition
a response is weakened by an outcome that follows it
Term
reinforcer
Definition
the outcome that increases the frequency of a response
Term
punishment
Definition
a consequence that weakens the frequency of a response
Term
discrimination stimulus
Definition
a signal that a particular response will now produce certain consequences (light in the skinner box may indicate whether or not food will be dispensed with the lever is pressed)
Term
positive reinforcement
Definition
occurs when a response is strengthened by a subsequent presentation of stimulus
Term
primary reinforcer
Definition
satisfy biological needs, naturally found satisfying
Term
secondary reinforcer
Definition
become satisfying/wanted through association with primary reinforcer
Term
negative reinforcement
Definition
response is strengthened by the removal or avoidance of an disliked stimulus
Term
operant extinction
Definition
the weakening and eventual disappearance of a response because it is no longer reinforced
Term
resistance to extinction
Definition
the degree to which non reinforced response
Term
Aversive/Positive Punishment
Definition
occurs when a response is weakened by the presentation of a stimulus
Term
shaping (Method of Successive Approximations)
Definition
involves reinforcing successive approximations toward a final response
Term
chaining
Definition
a technique used to develop a sequence of responses by reinforcing each response with the opportunity to perform the next response
Term
operant generalization
Definition
operate response occurs to a new antecedent stimulus or situation similar to the original one (put away trash, praised, put away laundry)
Term
operant discrimination
Definition
an operant response will occur to one antecedent or stimulus but not another
Term
continuous reinforcement
Definition
every response of a particular type is reinforced (rat receives food every time it presses the lever)
Term
partial (intermittent) reinforcement
Definition
only a portion of the responses of a particular type are reinforced (slot machine)
Term
Fixed Ratio Schedule
Definition
reinforcement is given after a fixed number of responses (press lever 20 times to get food)
Term
Variable Ratio Schedule
Definition
reinforcement is given after a variable number of responses, all centered around an average (get food for an average of presses sometimes...18....22...average of 20)
Term
continuous
Definition
reinforcement produces more rapid learning than partial
Term
continuously
Definition
reinforced responses extinguish more rapidly than partial
Term
escape conditioning
Definition
organism learns to stop a stimulus they didn't like (no light, shock starts they press the button) *actually feel shock
Term
avoidance conditioning
Definition
organism learns a response to avoid an aversive stimulus (light comes on presses button to stop shock) *never feels shock
Term
token economies
Definition
desirable behaviors are quickly reinforced with tokens that are turned in for tangible rewards
Term
applied behavioral analysis
Definition
combines a behavioral approach with scientific method to solve individual and societal problems. designs and implements a program of change, collects data on the program's effectiveness
Term
behavior modification
Definition
procedures used to modify/change behavior
Term
preparedness
Definition
some things are more innate/natural to condition, behaviors related to survival are learned more easily
Term
conditioned taste aversion
Definition
a conditioned response in which taste, sight, and or smell of a particular food becomes disgusting/repulsive
Term
latent learning
Definition
learning that occurs but is not demonstrated until bonus points are given
Term
observational learning
Definition
learning that occurs by observing the behavior of a model (attention, retention, reproduction, motivation)
Term
modeling
Definition
human's capacity to learn by observation
Term
social-cognitive theory
Definition
emphasizes that people learn by observing the behavior of models and acquiring the beleif that they can produce behaviors to influence the events in their lives
Term
memory
Definition
process that allows us to record and store later retrieve
Term
encoding
Definition
putting in (typing)
Term
storage
Definition
recording it (saving)
Term
retrieval
Definition
applying it (accessing)
Term
Three Stage Memory Model
Definition
sensory, short term, long term
Term
sensory memory
Definition
briefly holds incoming sensory information
Term
short-term memory
Definition
temporarily holds a limited amount of information, no more than 7 +-2 meaningful items
Term
chunking
Definition
combines individual items into larger units of meaning
Term
working memory
Definition
a limited-capacity system that temporarily stores and processes information
Term
phonological loop
Definition
sound working memory
Term
visuospatial sketchpad
Definition
visual/spacial info working memory
Term
episodic buffer
Definition
integrates and manipulates information from the phonological and visuospatial sketch pad (sight and sound)
Term
central executive
Definition
direct, overall action, controls the focus of attention, and integrates information in episodic buffer
Term
long-term memory
Definition
our vast library of more durable stored memories
Term
serial position effect
Definition
the ability to recall an item is influenced by the item's position in a series
Term
primary effect
Definition
superior recall of early items
Term
recency effect
Definition
superior recall of recent items, can be eliminated, immediate recall of info shoes typical primacy and recency of effects, delayed recall without rehearsal shows primacy
Term
encoding
Definition
writing of information into long-term memory, increases likelihood of retrieval greater
Term
effort processing
Definition
encoding intentionally requires conscious attention
Term
levels of processing
Definition
the more deeply we process information the better we will remember it
Term
structural encoding
Definition
how a stimulus looks
Term
phonological encoding
Definition
remembering how a stimulus sounds
Term
sematic encoding
Definition
remember what a stimulus means
Term
matinence rehearsal
Definition
repetition, keeps info in active working memory
Term
elaborative rehearsal
Definition
focusing on the meaning of info expanding (elaborating) on it in some way
Term
Dual-Coding Theory
Definition
visual and verbal codes
Term
Method of Loci
Definition
a memory aid that associates information with mental images of physical locations
Term
Mnemonic devices
Definition
more meaningful
Term
schema
Definition
organized pattern of thought
Term
episodic memory
Definition
when, where, what happened
Term
somantic memory
Definition
general factual knowledge about the world
Term
declarative memory
Definition
factual knowledge
Term
procedural memory
Definition
skills and actions, motor & cognitive skills, classically conditioned responses
Term
explicit memory
Definition
conscious or intentional memory retrieval;recognition is whether it's familiar or not;recall is spontaneous memory retrieval; cued recall; hints are given
Term
implicit memory
Definition
influences behavior without realization
Term
retrieval cue
Definition
internal/external stimulus that activates information stored in long-term memory (a smell reminds you of an old memory)
Term
(TOT) Tip of the Tongue State
Definition
we cannot recall something but feel that we are on the verge of remembering it
Term
Motivated Forgetting
Definition
consciously or unconsciously motivated to forget
Term
repression
Definition
motivational, protective strategy that protects us by blocking the unconscious recall of anxiety arousing memories
Term
retrograde
Definition
losing memories from past
Term
anterograde
Definition
remembering information that occurs after onset of amnesia
Term
plaques
Definition
clumps of proteins build up on outer neuron
Term
tangles
Definition
twisted fibers wound with neurons
Term
Gestalt laws of perceptual organization
Definition
similarity, proximity, closure, continuity
Term
Figure-Ground Relations
Definition
our tendency to organize stimuli in to a central or foreground and a background (foreground is usually in front of or on top of what we consider background)
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